G 3500 1 Ton Van V8-379 6.2L DSL VIN J FI (1992)
4. This test checks the ability of the PCM/TCM to ground or control shift solenoid "B".
5. The final test verifies that CKT 1223 is not shorted to ground.
Diagnostic Aids:
Check all connections, especially those at the transmission pass-thru connector. See: Transmission Control Systems/Testing and
Inspection/Symptom Related Diagnostic Procedures/Intermittents